Pgpr- Polyglycerol Polyricinoleate
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It is an Emulicifer. The chemical formula varies because the fatty acids and hydroxy group ricinoleate. If taken in extreme doses, it can harm pregnant women, but enough is never found in any food for it to do anything. It can affect the hormone that helps you grow.

http://www.rikenvitamin.jp/int/emulsifier/basic/kind.html
http://www.sciencedirect.com
Robert Glynn